Patent US3562674A successfully refreshed from Google Patents.
US3562674A
Expired / Lapsed
US
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Broadband microwave phase shifter utilizing stripline coupler
Assignee: Anaren Microwave Inc
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Filing: 1968-06-17
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Granted: 1971-02-09
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Expires: 1988-06-17
Abstract
Abstract A TWO-PORT MICROWAVE-SIGNAL PHASE SHIFTER UTILIZES STRIPLINE TECHNOLOGY. THE PHASE SHIFTER COMPRISES A FIRST SIGNAL CONDUCTOR PRINTED IN THE FORM OF A CLOSED LOOP ON ONE SIDE OF A DIELETRIC SHEET. PRINTED ON THE OTHER SIDE OF THE SHEET IS A SECOND SIGNAL CONDUCTOR OVERLYING THE FIRST SIGNAL CONDUCTOR AND SIMILARLY CONTOURED. HOWEVER, THE SECOND SIGNAL CONDUCTOR IS AN OPEN LOOP. THE ENDS OF THE SECOND SIGNAL CONDUCTOR ARE THE SIGNAL TERMINALS. DISPOSED AGAINST EACH OF THE SIGNAL CONDUCTORS IS A SHEET OF DIELECTRIC MATERIAL HAVING A CONDUCTIVE LAYER ON ITS FACE REMOTE FROM THE SIGNAL CONDUCTOR.
Inventors
- 👤 Carl W Gerst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:05
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/12; H01P5/16; H01P5/18; H01P5/184; H01P5/185; H01P1/00; H01P1/18; H01P1/184; H01P5/187
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |